Home Forums Tech Helproom Garmin satnav updates. Explanation please Forum Rules | Contact Forum Editor | Report a Post Garmin satnav updates. Explanation please Clapton is God 15:48 15 Oct 2015 Locked Answered I've just bought a Garmin Nuvi 57 satnav. Having also downloaded the Garmin software to my PC it tells me that one of the software updates available is "replace existing map". Why would I need to replace the existing map - or is this Garmin's rather 'clunky' way of telling me that there are updates available for my map? Fruit Bat /\0/\ 17:15 15 Oct 2015 Answer it doesn't amend your existing map, its replacing the old 2013 map with a 2014 map map files are replaced rather than updated, Clapton is God 07:45 16 Oct 2015 Thanks Fruit Bat. I'll 'replace' my map, then! This thread is now locked and can not be replied to.